使用poi API读取XLSX文件不起作用
所以我得到了这个Excel文件，我想读取一些数据，我发现了似乎做我想要的Apache POI API。 尽pipe我有一点点小心。 我的Gradle同步似乎很好，但每当我尝试运行应用程序，我得到这些错误消息：
Note: Some input files use or override a deprecated API. Note: Recompile with -Xlint:deprecation for details. AGPBI: {"kind":"error","text":"trouble processing \"javax/xml/XMLConstants.class\":","sources":[{}]} AGPBI: {"kind":"error","text":"Ill-advised or mistaken usage of a core class (java.* or javax.*)","sources":[{}]} AGPBI: {"kind":"error","text":"when not building a core library.","sources":[{}]} AGPBI: {"kind":"error","text":"This is often due to inadvertently including a core library file","sources":[{}]} AGPBI: {"kind":"error","text":"in your application\u0027s project, when using an IDE (such as","sources":[{}]} AGPBI: {"kind":"error","text":"Eclipse). If you are sure you\u0027re not intentionally defining a","sources":[{}]} AGPBI: {"kind":"error","text":"core class, then this is the most likely explanation of what\u0027s","sources":[{}]} AGPBI: {"kind":"error","text":"going on.","sources":[{}]} AGPBI: {"kind":"error","text":"However, you might actually be trying to define a class in a core","sources":[{}]} AGPBI: {"kind":"error","text":"namespace, the source of which you may have taken, for example,","sources":[{}]} AGPBI: {"kind":"error","text":"from a non-Android virtual machine project. This will most","sources":[{}]} AGPBI: {"kind":"error","text":"assuredly not work. At a minimum, it jeopardizes the","sources":[{}]} AGPBI: {"kind":"error","text":"compatibility of your app with future versions of the platform.","sources":[{}]} AGPBI: {"kind":"error","text":"It is also often of questionable legality.","sources":[{}]} AGPBI: {"kind":"error","text":"If you really intend to build a core library -- which is only","sources":[{}]} AGPBI: {"kind":"error","text":"appropriate as part of creating a full virtual machine","sources":[{}]} AGPBI: {"kind":"error","text":"distribution, as opposed to compiling an application -- then use","sources":[{}]} AGPBI: {"kind":"error","text":"the \"--core-library\" option to suppress this error message.","sources":[{}]} AGPBI: {"kind":"error","text":"If you go ahead and use \"--core-library\" but are in fact","sources":[{}]} AGPBI: {"kind":"error","text":"building an application, then be forewarned that your application","sources":[{}]} AGPBI: {"kind":"error","text":"will still fail to build or run, at some point. Please be","sources":[{}]} AGPBI: {"kind":"error","text":"prepared for angry customers who find, for example, that your","sources":[{}]} AGPBI: {"kind":"error","text":"application ceases to function once they upgrade their operating","sources":[{}]} AGPBI: {"kind":"error","text":"system. You will be to blame for this problem.","sources":[{}]} AGPBI: {"kind":"error","text":"If you are legitimately using some code that happens to be in a","sources":[{}]} AGPBI: {"kind":"error","text":"core package, then the easiest safe alternative you have is to","sources":[{}]} AGPBI: {"kind":"error","text":"repackage that code. That is, move the classes in question into","sources":[{}]} AGPBI: {"kind":"error","text":"your own package namespace. This means that they will never be in","sources":[{}]} AGPBI: {"kind":"error","text":"conflict with core system classes. JarJar is a tool that may help","sources":[{}]} AGPBI: {"kind":"error","text":"you in this endeavor. If you find that you cannot do this, then","sources":[{}]} AGPBI: {"kind":"error","text":"that is an indication that the path you are on will ultimately","sources":[{}]} AGPBI: {"kind":"error","text":"lead to pain, suffering, grief, and lamentation.","sources":[{}]} AGPBI: {"kind":"error","text":"1 error; aborting","sources":[{}]} FAILED FAILURE: Build failed with an exception. * What went wrong: Execution failed for task ':app:transformClassesWithDexForDebug'. > com.android.build.api.transform.TransformException: java.lang.RuntimeException: com.android.ide.common.process.ProcessException: Error:trouble processing "javax/xml/XMLConstants.class": Error:Ill-advised or mistaken usage of a core class (java.* or javax.*) Error:when not building a core library. Error:This is often due to inadvertently including a core library file Error:in your application's project, when using an IDE (such as Error:Eclipse). If you are sure you're not intentionally defining a Error:core class, then this is the most likely explanation of what's Error:going on. Error:However, you might actually be trying to define a class in a core Error:namespace, the source of which you may have taken, for example, Error:from a non-Android virtual machine project. This will most Error:assuredly not work. At a minimum, it jeopardizes the Error:compatibility of your app with future versions of the platform. Error:It is also often of questionable legality. Error:If you really intend to build a core library -- which is only Error:appropriate as part of creating a full virtual machine Error:distribution, as opposed to compiling an application -- then use Error:the "--core-library" option to suppress this error message. Error:If you go ahead and use "--core-library" but are in fact Error:building an application, then be forewarned that your application Error:will still fail to build or run, at some point. Please be Error:prepared for angry customers who find, for example, that your Error:application ceases to function once they upgrade their operating Error:system. You will be to blame for this problem. Error:If you are legitimately using some code that happens to be in a Error:core package, then the easiest safe alternative you have is to Error:repackage that code. That is, move the classes in question into Error:your own package namespace. This means that they will never be in Error:conflict with core system classes. JarJar is a tool that may help Error:you in this endeavor. If you find that you cannot do this, then Error:that is an indication that the path you are on will ultimately Error:lead to pain, suffering, grief, and lamentation. Error:1 error; aborting Error:Execution failed for task ':app:transformClassesWithDexForDebug'. > com.android.build.api.transform.TransformException: java.lang.RuntimeException: com.android.ide.common.process.ProcessException: java.util.concurrent.ExecutionException: com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Program Files\Java\jdk1.8.0_51\bin\java.exe'' finished with non-zero exit value 1 我已经尝试了2种方法来添加依赖关系。 首先，我从他们的网站下载了所有的jar文件。 把它们放在一个libs文件夹中，并在gradle文件中添加一个文件树依赖关系。 这没有奏效。 现在我只是用它来代替：
compile 'org.apache.poi:poi:3.14' compile 'org.apache.poi:poi-ooxml:3.14' compile 'org.apache.poi:poi-ooxml-schemas:3.14' compile 'org.apache.xmlbeans:xmlbeans:2.6.0' compile 'com.github.virtuald:curvesapi:1.03'
//这是实际的代码：
private void XLSFileReader(){ try { FileInputStream file = new FileInputStream(new File(xlsFilePath)); //Create Workbook instance holding reference to .xlsx file XSSFWorkbook workbook = new XSSFWorkbook(file); //Get first/desired sheet from the workbook XSSFSheet sheet = workbook.getSheetAt(0); //Iterate through each rows one by one Iterator<Row> rowIterator = sheet.iterator(); while (rowIterator.hasNext()) { Row row = rowIterator.next(); //For each row, iterate through all the columns Iterator<Cell> cellIterator = row.cellIterator(); while (cellIterator.hasNext()) { Cell cell = cellIterator.next(); //Check the cell type and format accordingly switch (cell.getCellType()) { //Logs to the window to confirm that it works case Cell.CELL_TYPE_NUMERIC: Log.d("Kolumn", cell.getNumericCellValue() + "\t"); break; case Cell.CELL_TYPE_STRING: Log.d("Rad",cell.getStringCellValue() + "\t"); break; } } System.out.println(""); } file.close(); } catch (Exception e) { e.printStackTrace(); }
我search了很多，但没有任何方法，我发现已经为我工作。